Harnessing the sun’s energy to produce heat or electricity is what? a. a major source of air pollution b. nonpolluting c. inexpensive d. possible only in coastal areas

The blank theory suggests that the sun, planets, and other celestial bodies of the solar system came from a cloud of dust and gas? a.) condensationb.) steady state c.) big bang d.) nebular

Explain why the rate of urbanisation is in the way it is between developed and undeveloped countries.

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel